:root {
  --login-deep: #103f52;
  --login-water: #1d7283;
  --login-mist: #d7eaec;
  --login-paper: #f8fbfa;
  --login-signal: #e39543;
}

.login-body {
  box-sizing: border-box;
  min-width: 988px;
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  overflow: auto;
  background:
    linear-gradient(115deg, color-mix(in srgb, var(--login-mist) 42%, transparent), transparent 56%),
    var(--main-bg);
  color: var(--text);
  font-family: "Microsoft YaHei UI", "PingFang SC", sans-serif;
}

.login-shell {
  width: 940px;
  height: 540px;
  min-height: 540px;
  flex: 0 0 auto;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--login-water) 28%, var(--border));
  border-radius: 24px;
  background: var(--sidebar-bg);
  box-shadow: 0 28px 80px color-mix(in srgb, var(--login-deep) 17%, transparent);
}

.login-brand {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 72px 58px;
  overflow: hidden;
  color: #f7ffff;
  background: linear-gradient(145deg, var(--login-deep), var(--login-water));
}

.login-kicker,
.login-step {
  font: 700 0.7rem/1.2 ui-monospace, "Cascadia Code", monospace;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.login-brand h1 {
  margin: 14px 0 12px;
  font: 700 clamp(2.7rem, 7vw, 4.7rem)/0.98 "STKaiti", "KaiTi", serif;
  letter-spacing: 0.04em;
}

.login-brand p {
  max-width: 330px;
  margin: 0;
  color: color-mix(in srgb, #fff 78%, var(--login-mist));
  font-size: 0.95rem;
  line-height: 1.8;
}

.login-company-lockup {
  position: absolute;
  left: 40px;
  top: 32px;
  z-index: 1;
  width: fit-content;
}

.login-company-logo {
  display: block;
  width: 218px;
  height: 52px;
  overflow: hidden;
}

.login-company-logo svg {
  display: block;
  width: 100%;
  height: 100%;
}

.login-watermark {
  position: absolute;
  right: -30px;
  bottom: 26px;
  width: 330px;
  height: 100px;
  transform: rotate(-7deg);
  opacity: 0.45;
}

.login-watermark span {
  position: absolute;
  inset-inline: 0;
  height: 48px;
  border-top: 1px solid rgba(255, 255, 255, 0.75);
  border-radius: 50%;
}
.login-watermark span:nth-child(2) { top: 22px; transform: translateX(28px); }
.login-watermark span:nth-child(3) { top: 44px; transform: translateX(-22px); }

.login-card {
  align-self: center;
  padding: 56px 52px;
}

.login-card header { margin-bottom: 30px; }
.login-step { color: var(--login-water); }
.login-card h2 { margin: 9px 0 8px; font-size: 1.65rem; }
.login-card header p { margin: 0; color: var(--muted); font-size: 0.86rem; }
.login-card form { display: grid; gap: 18px; }
.login-field { display: grid; gap: 7px; color: var(--muted); font-size: 0.8rem; font-weight: 700; }
.login-field input {
  width: 100%;
  box-sizing: border-box;
  padding: 13px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--input-bg);
  color: var(--text);
  font: inherit;
  font-size: 0.95rem;
}
.login-field input:focus {
  outline: 3px solid color-mix(in srgb, var(--login-water) 23%, transparent);
  border-color: var(--login-water);
}
#login-submit {
  margin-top: 4px;
  padding: 13px 18px;
  border: 0;
  border-radius: 10px;
  background: var(--login-deep);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  transition: background 150ms ease;
}
#login-submit:hover:not(:disabled) { background: var(--login-water); }
#login-submit:focus-visible { outline: 3px solid var(--login-signal); outline-offset: 3px; }
#login-submit:disabled { opacity: 0.62; cursor: wait; }
.login-error { margin: -5px 0 0; color: var(--error-text); font-size: 0.84rem; }

@media (prefers-reduced-motion: reduce) {
  #login-submit { transition: none; }
}